Creating a waveform switch

Reply to Creating a waveform switch on Sat, 08 Nov 2008 17:16:07 GMT

LyteBryte — Sat, 08 Nov 2008 17:16:07 GMT

hi again,
im creating a very simple patch in which there are 3 sine wave osc. each with two pitches switchable with keys or bang objects. i want to make a switch that makes it so i can select other waveforms so i can put sounds together. i have the three osc. multiplying to a dac. and i think i need to send/receive from the subpatch to the main window. i was wondering how to: patch the waveform so that i can select them, use the hradio as i think it may be a switch that would do this is the main window, and in what order should the patch be patched so that i can have the oscs. and the dac in a subpactch while hhaveing the switch be out of the window.

thanks.

Reply to Creating a waveform switch on Sun, 09 Nov 2008 08:48:13 GMT

hardoff — Sun, 09 Nov 2008 08:48:13 GMT

well, not sure if i still really understand your question,,,

but [tabread4~] tabosc4~] [tabplay~] etc all accept [set xxxxx( messages to switch between different tables.

so, you could name your waveform tables 0-waveform, 1-waveform, 2-waveform...etc

and then connect your hradio to [set $1-waveform( to switch through tables.

Reply to Creating a waveform switch on Sun, 09 Nov 2008 09:25:38 GMT

ClaudiusMaximus — Sun, 09 Nov 2008 09:25:38 GMT

another alternative (if your waveforms are closely related to each other mathematically) is to use [expr~].

something like this is what I have in mind (it's a variable width sawtooth/triangle with waveshaping to make it squareish):

[phasor~ 50] [sig~ 0.3] /* width 0..1 */ [sig~ 6] /* drive 2..20*/
| | |
[expr~ tanh((if($v1<$v2,$v1/$v2,(1-$v1)/(1-$v2))-0.5)*$v3)]
|
[hip~ 1] /* leak DC to prevent speakers melting */
|
[dac~]

tip: if you press Ctrl-t when editing an object, you get a better editor where you can copy and paste properly

then for the structure of the patch, i'd do something like this:

waveform controls
|
[pd waveforms] // inside you can use [inlet]/[inlet~]/[outlet]/[outlet~]
|
[dac~]

or if you have repeated elements in the patch, use abstractions instead of subpatches so you don't get copy and paste nightmares (eg, you find a bug in one copy and have to change all 8 by hand...)